{"uid":"cap_rarBbSFnLNpOIewVVvZYt","slug":"groundcheck-claim-grounding-citation-attestation-0d6534ed","name":"Groundcheck Claim Grounding & Citation Attestation","description":"Claim grounding and citation attestation for AI agents: verified enrichment that adds a veracity field to text. Each factual claim is grounded against live web sources (Wikipedia + world news) and returned with a machine-verified verdict (supported/refuted/unverified), a confidence score, and cited sources. Refuses to guess on conflicting evidence. Built for research agents that must cite, citation-locked content, and compliance checks.","url":"https://groundcheck.seiche.info/check","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"text":{"type":"string","minLength":1,"description":"Document whose factual claims to verify"},"max_claims":{"type":"integer","maximum":20,"minimum":1}}},"responseSchema":{"type":"json","example":{"report":[{"claim":"The Eiffel Tower was completed in 1889.","verdict":"supported","rationale":"sources support and none refute","confidence":0.83}],"backend":"wikipedia+gdelt","checked":2,"classifier":"free-llm-router"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Hr7osKX0-ZmFNM7QsKlx2","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies factual claims in a text document against live web sources, returning machine-verified verdicts (supported/refuted/unverified), confidence scores, and cited sources for each claim.","exampleAgentPrompt":"Check the facts in this paragraph and tell me which claims are supported, refuted, or unverified — and show me the sources: 'The Eiffel Tower was completed in 1889 and stands 330 meters tall. It was originally intended to be dismantled after 20 years.' Verify up to 5 claims.","exampleUseCases":[{"title":"Fact-check AI research summary","prompt":"I just generated a research summary on climate change for a client report — before I send it, can you check every factual claim in it and flag anything that's refuted or unverified? Show me the sources so I can cite them or fix the errors."},{"title":"Verify news article before publishing","prompt":"We're about to publish this article on our site. Can you run through all the factual statements in it, tell me which ones are supported by live sources, which are refuted, and which couldn't be verified — I don't want to put anything out that's wrong."},{"title":"Compliance check on legal brief","prompt":"This legal brief contains a bunch of factual assertions about industry regulations and historical precedents. Can you verify each claim against current sources and give me a confidence score for each one? I need to know what's solid before we file it."}],"resultDescription":"The agent receives a structured response for each extracted factual claim, including: a verdict label (supported, refuted, or unverified), a confidence score (0–1), and a list of cited live sources (Wikipedia pages or news articles) that ground or contradict the claim. Claims with conflicting evidence are returned as unverified rather than guessed.","failureModes":["Text contains no verifiable factual claims — returns empty claims array or unverified verdicts","max_claims exceeds allowed maximum of 20 — returns validation error","Live source lookup fails or times out — claim may return as unverified with low confidence","Text is too ambiguous or opinion-based — claims returned as unverified with note of insufficient evidence","Conflicting evidence across sources — endpoint refuses to guess and returns unverified with conflicting sources listed"],"whenToPreferThis":"Choose this endpoint when an AI agent must produce citable, verifiably grounded text — especially for research pipelines, compliance checks, or citation-locked content generation where hallucination is unacceptable. Prefer it over general-purpose search when you need a structured machine-readable verdict (supported/refuted/unverified) per claim with source attribution, rather than raw search results. Ideal for agents that have already generated text and need post-hoc attestation before delivery.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:35:42.394Z","isFirstParty":false}